Georgios Kotsakis , DDS, MS

Assistant Professor, Periodontics

Office: D552A
Box: 357444


Dr. Kotsakis obtained his DDS degree from the University of Athens, Greece (2009). After practicing General Dentistry in private practice and in the Hellenic Navy, he earned a Certificate in Periodontology (2015) and a Masters in Science (2015), both from the University of Minnesota, MN, USA. Since joining the faculty at the University of Washington as a full-time Assistant Professor in Periodontics, Dr. Kotsakis divides his time between teaching undergraduate and graduate students in Periodontology and Implant Dentistry, providing patient care in the School’s intramural practice and conducting clinical research. As part of his service to the professional community he serves as a reviewer to various disciplinary scientific journals including the Journal of Clinical Periodontology and the Journal of Oral Implantology and as an ad-hoc reviewer for prestigious interdisciplinary journals, such as the Journal of Photochemistry and Photobiology B: Biology and Cytokine, among others. Dr. Kotsakis has authored more than 40 articles in peer-reviewed journals and is a frequent invited international speaker on surgical methods in Implant Dentistry.

Research Interests

Dr. Kotsakis’ research interests lie in epidemiologic aspects of periodontal and peri-implant diseases with a special focus on the development of brief, but valid, clinically-based and patient-oriented oral-health outcome measures to facilitate the integration of oral diseases’ assessment in large-scale health studies. Dr. Kotsakis’ research philosophy is grounded in inter-disciplinary collaboration. His work also includes preclinical and clinical studies that investigate bone response to host-related factors, such as diabetes mellitus, and to local factors, such as titanium surface contamination and osteostimulative biomaterials. Dr. Kotsakis’ funded work has been supported both by NIDCR/NIH and by investigator-initiated industry-funded studies.

Clinical Periodontal Research Lab

Awards and Recognition

  • AAP Teaching Fellowship, American Academy of Periodontology Foundation, 2016
  • Diplomate, American Board of Periodontology, 2016
  • Clinical Science Award, American Academy of Periodontology, 2015
  • D. Walter Cohen Award, American Academy of Periodontology Foundation, 2014
  • AAP Educator Scholarship, American Academy of Periodontology Foundation, 2014
  • Fellowship, International Congress of Oral Implantologists (ICOI)
  • Young Clinicians, ”Leader for life” award, Straumann
  • “Excellence” Prize, Research competition, 10th Annual MegaGen International Symposium
  • Oral Abstract presentations award, 63rd American Academy of Implant Dentistry (AAID) Annual meeting

Selected Peer-reviewed publications

  1. Kotsakis GA, Chrepa V, Marcou N, Prasad H, Hinrichs J. Flapless alveolar ridge preservation utilizing the ‘’socket-plug’’ technique: clinical technique and review of the literature. J Oral Implantol. 2014 Dec;40(6):690-8
  2. Kotsakis GA, Salama M, Chrepa V, Hinrichs J, Gaillard P. A randomized, blinded, controlled clinical study of particulate Anorganic Bovine Bone Mineral and Calcium Phosphosilicate Putty bone substitutes for alveolar ridge preservation. Int J Oral Maxillofac Implants. 2014 Jan-Feb;29(1):141-51
  3. Kotsakis GA, Joachim F, Saroff SA, Mahesh L, Prasad H, Rohrer M. Histomorphometric Evaluation of a Calcium-Phosphosilicate Bone Substitute in Extraction Sockets. Int J Periodontics Restorative Dent. 2014 Mar-Apr;34(2):233-9
  4. Babbush C, Kanawati A, Kotsakis GA, Hinrichs JE. A financial outcome analysis of conventional implant treatment planning versus the ‘’All-on-four’’ concept for the rehabilitation of the edentulous jaw. Implant Dent. 2014 Apr;23(2):218-24.
  5. Kotsakis GA, Konstantinides J., Karoussis I., Ma X., Chu H. A systematic review and meta-analysis of the effect of laser therapy in the treatment of peri-implantitis. J Periodontol. 2014 Sep;85(9):1203-13
  6. Kotsakis GA, Maragou T, Ioannou AL, Romanos G, Hinrichs JE. Prevalence of maxillary midline papillae recession and association with interdental smile line: a cross-sectional study. Int J Periodontics Restorative  February 2014;34 (suppl):s81-87
  7. Kher U, Mazor Z, Stanitsas P, Kotsakis GA. Implants placed simultaneously with lateral window sinus augmentation utilizing a calcium phosphosilicate putty alloplastic bone substitute for increased primary implant stability: A retrospective study. Implant Dent. 2014 Aug;23(4):496-501
  8. Kotsakis GA, Ioannou A, Hinrichs JE, Romanos G. A systematic review of observational studies evaluating implant placement in the maxillary jaws of medically compromised patients. Clin Imp Dent Rel Res. 2015 Jun;17(3):598-609
  9. Konstantinides J, Kumar T, Kher U, Stanitsas P, Hinrichs JE, Kotsakis GA. Clinical results of implant placement in resorbed ridges using simultaneous guided bone regeneration: A multi-center case series. Clin Oral Investig. 2015 Mar;19(2):553-9
  10. Siormpas, K, Mitsias, M, Kontsiotou- Siormpa E, Garber, D, Kotsakis GA. Immediate implant placement in the esthetic zone utilizing the ‘’root-membrane’’ technique: clinical results up to 5 years post-loading. Int J Oral Maxillofac Implants. 2014 Nov-Dec;29(6):1397-405
  11. Kotsakis GA, Javed F, Hinrichs J, Karoussis I, Romanos G. A systematic review and meta-analysis of the impact of cigarette smoking on clinical outcomes following periodontal flap surgical procedures. J Periodontol. 2015; 86(2):254-263
  12. Ioannou A, Kotsakis GA, McHale M, Lareau DE, Hinrichs JE, Romanos GE. Soft tissue surgical procedures for optimizing anterior implant esthetics. 2015;2015:740764
  13. Konstantinides J, Kotsakis GA, Gerdes S, Walter MH. A Cross-sectional study on the prevalence and risk indicators of peri-implant diseases. Eur J Oral Imp. 2015 Spring;8(1):75-88
  14. Kotsakis GA, Thai A, Ioannou A, Demmer R, Michalowicz BS. Association between Low-dose Aspirin and Periodontal Disease: Results from The Continuous National Health and Nutrition Examination Survey (NHANES) 2011-2012, J Clin Periodontol. 2015 Apr;42(4):333-41
  15. Babbush C, Kanawati A, Kotsakis GA. Marginal bone stability around tapered, platform-shift implants placed with the All-on-4 concept: a large-scale cohort study. Int J Oral Maxillofac Implants. [In Print]

Book chapters

  1. James E Hinrichs, George A Kotsakis. “Classification of Diseases and Conditions Affecting the Periodontium’’. In: Newman, M.,Takei, H., Klokkevold P., Carranza, F., Clinical Periodontology, Chapter 3, 12th Edition published by Elsevier. 2014
  2. James E Hinrichs, George A Kotsakis, Donald Lareau. “Soft Tissue Augmentation Surgery for Dental Implants”. In: Kademami D., Tiwana P, eds. Atlas of Oral and Maxillofacial Surgery, Chapter 27, 1st Edition published by Elsevier. 2015
  3. Charles Babbush, James E Hinrichs, George A Kotsakis. “The evolution of implant dentistry from a patient-oriented perspective”. In: Agliardi E, Romeo D, eds. Tilted Implants – Implant Rehabilitation with Immediate Loading, Chapter 2, by Quintessence Italia.
  4. George A Kotsakis, Suheil Boutros, Andreas Ioannou. “Soft Tissue Grafting for Implant Site Development: Diagnosis and Treatment Planning” In: Tolstunov L ed. Bone augmentation in Implant Dentistry, by Willey
  5. Suheil Boutros, George A Kotsakis. “Techniques of Soft Tissue Grafting in Implant Dentistry” In: Tolstunov L ed. Bone augmentation in Implant Dentistry, by Willey.